US20240017649A1 - Child seat anchor including energy absorber - Google Patents
Child seat anchor including energy absorber Download PDFInfo
- Publication number
- US20240017649A1 US20240017649A1 US17/812,465 US202217812465A US2024017649A1 US 20240017649 A1 US20240017649 A1 US 20240017649A1 US 202217812465 A US202217812465 A US 202217812465A US 2024017649 A1 US2024017649 A1 US 2024017649A1
- Authority
- US
- United States
- Prior art keywords
- energy absorber
- strap
- fixed
- seatback
- vehicle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000006096 absorbing agent Substances 0.000 title claims abstract description 80
- 239000007788 liquid Substances 0.000 claims description 26
- 239000002245 particle Substances 0.000 claims description 17
- 239000012530 fluid Substances 0.000 claims description 15
- 230000002209 hydrophobic effect Effects 0.000 claims description 9
- 239000000463 material Substances 0.000 description 11
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 238000004873 anchoring Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- -1 for example Substances 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 239000004918 carbon fiber reinforced polymer Substances 0.000 description 2
- IJOOHPMOJXWVHK-UHFFFAOYSA-N chlorotrimethylsilane Chemical compound C[Si](C)(C)Cl IJOOHPMOJXWVHK-UHFFFAOYSA-N 0.000 description 2
- 239000000084 colloidal system Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 239000010985 leather Substances 0.000 description 2
- KWGKDLIKAYFUFQ-UHFFFAOYSA-M lithium chloride Chemical compound [Li+].[Cl-] KWGKDLIKAYFUFQ-UHFFFAOYSA-M 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 230000000452 restraining effect Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000004381 surface treatment Methods 0.000 description 2
- 241000270728 Alligator Species 0.000 description 1
- 229920002430 Fibre-reinforced plastic Polymers 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 239000011358 absorbing material Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- DBKNGKYVNBJWHL-UHFFFAOYSA-N chloro-dimethyl-octylsilane Chemical compound CCCCCCCC[Si](C)(C)Cl DBKNGKYVNBJWHL-UHFFFAOYSA-N 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000006263 elastomeric foam Substances 0.000 description 1
- 239000011151 fibre-reinforced plastic Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000005661 hydrophobic surface Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/24—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles
- B60N2/26—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles for children
- B60N2/28—Seats readily mountable on, and dismountable from, existing seats or other parts of the vehicle
- B60N2/2803—Adaptations for seat belts
- B60N2/2806—Adaptations for seat belts for securing the child seat to the vehicle
- B60N2/2809—Adaptations for seat belts for securing the child seat to the vehicle with additional tether connected to the top of the child seat and passing above the top of the back-rest
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/24—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles
- B60N2/26—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles for children
- B60N2/28—Seats readily mountable on, and dismountable from, existing seats or other parts of the vehicle
- B60N2/2887—Fixation to a transversal anchorage bar, e.g. isofix
- B60N2/2893—Fixation to a transversal anchorage bar, e.g. isofix coupled to the seat sub-frame
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/24—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles
- B60N2/26—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles for children
- B60N2/28—Seats readily mountable on, and dismountable from, existing seats or other parts of the vehicle
- B60N2/2884—Seats readily mountable on, and dismountable from, existing seats or other parts of the vehicle with protection systems against abnormal g-forces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/24—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles
- B60N2/26—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles for children
- B60N2/28—Seats readily mountable on, and dismountable from, existing seats or other parts of the vehicle
- B60N2/2887—Fixation to a transversal anchorage bar, e.g. isofix
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/24—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles
- B60N2/26—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles for children
- B60N2/28—Seats readily mountable on, and dismountable from, existing seats or other parts of the vehicle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/24—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles
- B60N2/26—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles for children
- B60N2/28—Seats readily mountable on, and dismountable from, existing seats or other parts of the vehicle
- B60N2/2821—Seats readily mountable on, and dismountable from, existing seats or other parts of the vehicle having a seat and a base part
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/24—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles
- B60N2/26—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles for children
- B60N2/28—Seats readily mountable on, and dismountable from, existing seats or other parts of the vehicle
- B60N2/2842—Seats readily mountable on, and dismountable from, existing seats or other parts of the vehicle adapted to carry the child, when dismounted from the vehicle
Definitions
- Child seats are removable seats for seating and restraining children riding in a vehicle.
- Types of child seats include rearward-facing child seats, forward-facing child seats, combination seats that can face rearward or forward, and booster seats.
- Rearward-facing, forward-facing, and combination child seats include a harness for restraining the child occupant.
- Booster seats rely on the seatbelts included with the vehicle. Child seats may be held in place by the seatbelt of the vehicle and/or may include tethers for attaching to tether attachment brackets of the vehicle.
- Vehicles are equipped with anchor for anchoring the child seat to the vehicle.
- the anchor may provide for anchoring of the child seat to a vehicle seat and/or to a body of the vehicle.
- Child seats include anchoring for connecting the anchor of the vehicle.
- the anchor of the vehicle and the anchoring system of the child seat may be configured to comply with a standard, e.g., ISOFIX (e.g., ISO216), which is an international standard for attachment points for child safety seats in passenger cars; LATCH (“Lower Anchors and Tethers for Children”) in the United States; LUAS (“Lower Universal Anchorage System”); Canfix in Canada; UCSSS (“Universal Child Safety Seat System”).
- ISOFIX e.g., ISO216
- FIG. 1 is a perspective view of a vehicle with a cut-away to show a child seat on a vehicle seat.
- FIG. 2 is a magnified view of the child seat on the vehicle seat.
- FIG. 3 is a rear view of the child seat.
- FIG. 4 is a perspective view of the child seat removed from the vehicle seat.
- FIG. 5 is a perspective view of the child seat on the vehicle seat with a tether of the child seat disengaged with a tether anchor on the vehicle seat.
- FIG. 6 is the view of FIG. 5 with the tether of the child seat engaged with the tether anchor on the vehicle seat.
- FIG. 7 is a perspective view of the tether anchor.
- FIG. 8 is an exploded view of the tether anchor with a portion shown in cross-section to illustrate the location of a compressible fluid in a cavity of the tether anchor when assembled in FIG. 7 .
- FIG. 9 A is a diagram of the compressible fluid including a liquid and hydrophobic nanoporous particles in the liquid in the uncompressed state.
- FIG. 9 B is a diagram of the compressible fluid of FIG. 9 A in the compressed state.
- a vehicle seat includes a seatback and a child seat tether anchor supported by the seatback.
- the child seat tether anchor has a first member fixed to the seatback and a second member rotatably supported by the seatback.
- One of the first member and the second member defines a cavity with internal threads and the other of the first and second member is received in the cavity and has external threads engaged with the internal threads.
- the vehicle seat includes a strap on the second member.
- An energy absorber is in the cavity. The energy absorber is compressible relative to the first member and the second member.
- the strap may be wound around the second member.
- the vehicle seat may includes a connecting ring fixed to the strap.
- the strap may include a proximal end fixed to the second member and a distal end spaced from the proximal end.
- the connecting ring may be fixed to the distal end.
- the vehicle seat may include a connecting ring fixed to the strap.
- the strap may include a proximal end fixed to the second member and a distal end spaced from the proximal end.
- the connecting ring may be fixed to the distal end.
- the child seat tether anchor may include a frame fixed to the seatback.
- the first member may be fixed to the frame and the second member may be rotatably supported by the frame.
- the frame may include a hole that rotatably receives the second member.
- the second member may have a first end and a second end spaced from each other along a rotational axis.
- the threads may be on the first end and the second end engage the hole.
- the energy absorber may be a compressible fluid sealed in the cavity between the first member and the second member.
- the energy absorber may be a compressible liquid sealed in the cavity between the first member and the second member.
- the energy absorber may include a liquid and hydrophobic nanoporous particles in the liquid.
- An assembly includes a seat having a seatback and a child seat anchored to the seat and having a tether.
- An anchor is supported by the seatback.
- the anchor has a first member fixed to the seatback and a second member rotatably supported by the seatback.
- One of the first member and the second member defines a cavity with internal threads and the other of the first and second member is received in the cavity and has external threads engaged with the internal threads.
- a strap is on the second member.
- the tether of the child seat is connected to the strap.
- An energy absorber is in the cavity. The energy absorber is compressible relative to the first member and the second member.
- the strap may be wound around the second member.
- the vehicle seat may include a ring fixed to the strap.
- the strap may include a proximal end fixed to the second member and a distal end spaced from the proximal end.
- the ring may be fixed to the distal end.
- the tether may be connected to the ring.
- the vehicle seat may include a ring fixed to the strap.
- the strap includes a proximal end fixed to the second member and a distal end spaced from the proximal end.
- the ring may be fixed to the distal end.
- the tether may be connected to the ring.
- the energy absorber may be a compressible fluid sealed in the cavity between the first member and the second member.
- the energy absorber may be a compressible liquid sealed in the cavity between the first member and the second member.
- the energy absorber may include a liquid and hydrophobic nanoporous particles in the liquid.
- the second member may be rotatable relative to the first member between a loaded position that loads the energy absorber and an unloaded position that unloads the energy absorber relative to the loaded position.
- the energy absorber may resiliently deform between the loaded and unloaded positions.
- a vehicle seat 12 includes a seatback 14 and a child seat 34 tether anchor (hereinafter referred to as “upper anchor 16 ”) supported by the seatback 14 .
- the upper anchor 16 has a first member 18 fixed to the seatback 14 and a second member 26 rotatably supported by the seatback 14 .
- One of the first member 18 and the second member 26 defines a cavity 22 with internal threads 24 and the other of the first and second member 26 is received in the cavity 22 and has external threads 26 engaged with the internal threads 24 .
- a strap 28 is on the second member 26 .
- An energy absorber 30 is in the cavity 22 . The energy absorber 30 is compressible relative to the first member 18 and the second member 26 .
- An upper tether 32 of a child seat 34 is connectable to the strap 28 of the upper anchor 16 , as described further below.
- the tether pulls the strap 28 to rotate the second member 26 relative to the first member 18 .
- the engagement of the internal threads 24 and external threads 26 translates the second member 26 relative to the first member 18 .
- This relative rotation allows for payout of the strap 28 from the second member 26 and a limited amount of forward movement of the child seat 34 .
- the relative translation compresses the energy absorber 30 so that the energy absorber 30 absorbs energy to slow and limit the movement of the child seat 34 .
- the upper anchor 16 acts as a load limiter.
- the rotational engagement of the first member 18 and the second member 26 reduces the footprint of the upper anchor 16 to reduce packaging constraints.
- the vehicle 10 may be any suitable type of automobile, e.g., a passenger or commercial automobile such as a sedan, a coupe, a truck, a sport utility vehicle, a crossover vehicle, a van, a minivan, a taxi, a bus, etc.
- the vehicle 10 may be an autonomous vehicle.
- the vehicle 10 may be autonomously operated such that the vehicle 10 may be driven without constant attention from a driver, i.e., the vehicle 10 may be self-driving without human input.
- the vehicle 10 includes a vehicle body 36 that may be of a unibody construction, a body-on-frame construction (also referred to as a cab-on-frame construction), or any other suitable construction.
- vehicle body 36 may be of any suitable material, for example, steel, aluminum, and/or fiber-reinforced plastic, etc.
- the vehicle body 36 may define a passenger cabin 38 to house occupants, if any, of the vehicle 10 .
- the passenger cabin 38 may extend across the vehicle 10 , i.e., from one side to the other side of the vehicle 10 .
- the passenger cabin 38 includes a front end and a rear end with the front end being in front of the rear end during forward movement of the vehicle 10 .
- the vehicle 10 includes one or more vehicle seats 12 in the passenger cabin 38 .
- the vehicle 10 may include any suitable number of vehicle seats 12 .
- the vehicle seats 12 may be arranged in the passenger cabin 38 in any suitable position, i.e., as front seats, rear seats, third-row seats, etc.
- the vehicle seat 12 may be movable relative to the floor to various positions, e.g., movable fore-and-aft and/or cross-vehicle.
- the vehicle seats 12 may be of any suitable type, e.g., a bucket seat. Any suitable number of the vehicle seats 12 , i.e., one or more, may include the upper anchor 16 .
- the vehicle seat 12 includes the seatback 14 and a seat bottom 40 .
- the seatback 14 may be supported by the seat bottom 40 and may be stationary or movable relative to the seat bottom 40 .
- the seatback 14 and the seat bottom 40 may be adjustable in multiple degrees of freedom. Specifically, the seatback 14 and the seat bottom 40 may themselves be adjustable, in other words, adjustable components within the seatback 14 and/or the seat bottom 40 , and/or may be adjustable relative to each other.
- the vehicle seat 12 includes a seat frame and a covering supported on the seat frame.
- the seat frame may include tubes, beams, etc.
- the seat frame may be of any suitable metal (e.g., steel, aluminum, etc.), of any suitable plastic material (e.g., carbon fiber reinforced plastic (CFRP), glass fiber-reinforced semi-finished thermoplastic composite (organosheet), etc.), or any other suitable material.
- CFRP carbon fiber reinforced plastic
- organosheet glass fiber-reinforced semi-finished thermoplastic composite
- the covering may include upholstery and padding.
- the upholstery may be cloth, leather, faux leather, or any other suitable material.
- the upholstery may be stitched in panels around the frame.
- the padding may be between the covering and the seat frame and may be foam or any other suitable material.
- the vehicle seat 12 defines an occupant-seating area 42 .
- the child seat 34 may be disposed in the occupant-seating area 42 when installed, as shown in the Figures.
- the occupant-seating area 42 of the vehicle seat 12 may be above the seat bottom 40 and on a front side of the seatback 14 .
- the vehicle seat 12 includes at least one anchor 16 , 44 .
- Each anchor 16 , 44 is fixed to a component of vehicle seat 12 .
- the anchor 16 , 44 may be fixed to the seat frame, and more specifically, to the seat frame of the seatback 14 .
- the anchor 16 , 44 transmits force from the child seat 34 to the vehicle seat 12 to control the position of the child seat 34 on the vehicle seat 12 when the child seat 34 is engaged with the anchor 16 , 44 , as described further below.
- the anchor 16 , 44 may be fixed to the vehicle body 36 , e.g., a pillar, floor, etc.
- the anchor 16 , 44 is designed to engage a clip 50 of the child seat 34 , as described further below.
- the vehicle seat 12 may include more anchor.
- the vehicle seat 12 may include the upper anchor 16 on the seatback 14 , as described further below.
- the vehicle seat 12 may also include two other anchors (in this example referred to as “lower anchors 44 ”) at the intersection of the seat bottom 40 and the seatback 14 .
- the lower anchors 44 may be between the seat bottom 40 and seatback 14 , e.g., such that the lower anchors 44 may be accessed by compressing the covering of the seatback 14 and/or seat bottom 40 .
- the upper anchor 16 may be accessible on the vehicle-rearward side of the seatback 14 .
- the anchors 16 , 44 may be configured to comply with a standard.
- the anchors 16 , 44 may be configured to comply with ISOFIX (e.g., ISO216), which is an international standard for attachment points for child safety seats in passenger cars.
- the child seat 34 may be configured to comply with LATCH (“Lower anchors and Tethers for Children”) in the United States, LUAS (“Lower Universal Anchorage System”) or Canfix in Canada, and/or UCSSS (“Universal Child Safety Seat System”).
- LATCH Lower anchors and Tethers for Children
- LUAS Lower Universal Anchorage System
- Canfix in Canada
- UCSSS Universal Child Safety Seat System
- the anchors 16 , 44 may be positioned, sized, designed, etc., to comply with the standard.
- the child seat 34 is anchored to the vehicle seat 12 with the anchors 16 , 44 , as described further below.
- the child seat 34 is designed to control kinematics of a child, e.g., a human having a certain, age, height, weight, etc., during a vehicle 10 collision.
- the child seat 34 is configured for installation in the vehicle 10 .
- the child seat 34 When installed in the vehicle 10 , the child seat 34 is supported by the vehicle seat 12 .
- the child seat 34 may sit atop the seat bottom 40 and abut the seatback 14 .
- the child seat 34 may be installed in a rearward-facing orientation, i.e., where the occupant of the child seat 34 faces a rear of the vehicle 10 , as shown in the example in the Figures. In other examples, the child seat 34 may be installed in a forward-facing orientation, i.e., where the occupant of the child seat 34 faces a front of the vehicle 10 .
- the child seat 34 is designed to receive a child.
- the child seat 34 may include a seating portion having a bottom 52 and a back 54 , e.g., for a child to sit on and recline against.
- the child seat 34 may include a base 56 supporting the seating portion.
- the base 56 may be below the bottom 52 and/or behind the back 54 .
- the bottom 52 and/or back 54 may pivot relative to the base 56 , e.g., to change an angle of the bottom 52 and/or back 54 of the child seat 34 relative to the vehicle seat 12 supporting the child seat 34 .
- the bottom 52 and/or the back 54 may be upholstered, padded, etc.
- the base 56 may be rigid relative to the bottom 52 and/or the back 54 .
- the base 56 may be of rigid material including material types such as plastic, metal, etc.
- the child seat 34 may be configured to comply with a standard.
- the child seat 34 may be configured to comply with ISOFIX (e.g., ISO216), which is an international standard for attachment points for child safety seats in passenger cars.
- ISOFIX e.g., ISO216
- the child seat 34 may be configured to comply with LATCH (“Lower anchors and Tethers for Children”) in the United States, LUAS (“Lower Universal Anchorage System”) or Canfix in Canada, and/or UCSSS (“Universal Child Safety Seat System”).
- the child seat 34 includes at least one tether 32 , 46 .
- the child seat 34 may include one tether 32 , 46 for each anchor 16 , 44 of the vehicle seat 12 on which the child seat 34 is supported.
- the child seat 34 includes two lower tethers 46 and one upper tether 32 .
- the tethers 32 , 46 may be connected directly the base 56 , the bottom 52 , and/or the back 54 . Engagement of the tethers 32 , 46 with the anchors 16 , 44 provide physical attachment of the child seat 34 to the vehicle seat 12 .
- the child seat 34 may be engageable with the seatbelt of the vehicle seat 12 to anchor the child seat 34 to the vehicle seat 12 , as is known.
- One or more of the tethers 32 , 46 of the child seat 34 may include webbing 48 and a clip 50 engaged with the webbing 48 .
- the webbing 48 is fixed directly to the base 56 , the bottom 52 , and/or the back 54 and the clips 50 are releasably engageable with the anchors 16 , 44 of the vehicle seat 12 .
- the clips 50 may include an open loop and flexible gate, may be “alligator” style defining a slot with a button actuated latch, or any other suitable configuration for connecting the respective anchor.
- the clips 50 may be configured for attachment to the anchor 16 , 44 that meets a standard, e.g., ISOFIX, LATCH, LUAS, UCSSS, etc.
- the webbing 48 may extend through openings of the base 56 , the bottom 52 , and/or the back 54 .
- the webbing 48 may be looped around components of the base 56 , the bottom 52 , and/or the back 54 and sewn to itself.
- the clips 50 may be fixed to a distal end 78 of the webbing 48 .
- a loop may be sewn at the distal end 78 and extend through an opening of the clips 50 .
- the clip 50 may be slideably secured to the webbing 48 .
- the tether 32 , 46 may include an adjustment mechanism 58 for adjusting the length of the tether 32 , 46 for attachment and tightening of the tether 32 , 46 to the anchor 16 , 44 .
- the upper tether 32 in the example shown in the Figures includes the adjustment mechanism 58 .
- the adjustment mechanism 58 may include any suitable structure to adjust the length of the tether 32 , 46 such as bars, rollers, etc., including known structure.
- the child seat 34 includes a harness 60 that controls kinematics of a child in the child seat 34 , e.g., when the child seat 34 is installed in the vehicle 10 and during an impact to the vehicle 10 .
- the harness 60 may include multiple portions of webbing 48 that are releasably securable to each other, e.g., via a buckle and latch plates including those that are known.
- the harness 60 may be designed to extends across shoulders and a chest of the child in the child seat 34 .
- the harness 60 may be designed to extends across hips of the child in the child seat 34 .
- the harness 60 may be designed to extend between legs of the child in the child seat 34 , e.g., to prevent “submarining” of the child during an impact to the vehicle 10 .
- the harness 60 is connected to the base 56 , the bottom 52 , and/or the back 54 .
- the harness 60 may extend around and/or through slots in the base 56 , the bottom 52 , and/or the back 54 .
- the harness 60 may include a selectively engageable clamp that enables adjustment of a length of one or more portions of the harness, e.g., to adjust a size of the harness to accommodate a size of the child in the child seat 34 .
- the buckle of the child seat 34 assembly selectively secures portions of the webbing 48 relative to each other.
- the buckle may define a slot designed to receive one or more latch plates, supposed by the portions.
- the buckle may engage the latch plates, upon their insertion into the slot and restrict removal therefrom.
- the buckle may include a button that, upon depression, disengages the buckle from the latch plates, and permits removal of the latch plates, from the slot(s) of the buckle.
- the latch plates are designed to be received by and selectively engageable with the buckle.
- the latch plates may include an opening or other feature designed to engage with a latch of the buckle. The latch plates are supported by the harness.
- the upper anchor 16 is on the seatback 14 for releasable connection with the upper tether 32 of the child seat 34 .
- the upper anchor 16 has the first member 18 , the second member 26 , and the strap 28 .
- the upper anchor 16 includes a frame 62 fixed to the seatback 14 and supporting the first member 18 and the second member 26 .
- the energy absorber 30 is between the first member 18 and the second member 26 and absorbs energy during rotation of the second member 26 relative to the first member 18 .
- the upper tether 32 pulls the strap 28 , which rotates the second member 26 relative to the first member 18 and translates the second member 26 relative to the first member 18 .
- This relative rotation allows for payout of the strap 28 from the second member 26 and a limited amount of forward movement of the child seat 34 .
- the relative translation compresses the energy absorber 30 so that the energy absorber 30 absorbs energy to slow and limit the movement of the child seat 34 .
- the upper anchor 16 acts as a load limiter. This may reduce compression of the harness 60 on the occupant of the child seat 34 .
- the energy absorber 30 When the energy absorber 30 is fully compressed, as described further below, the energy absorber 30 prevents further rotation of the second member 26 relative to the first member 18 to prevent further relative rotation of the first member 18 and the second member 26 .
- the upper anchor 16 may be resettable.
- the energy absorber 30 is resilient and, when force on the strap 28 from the upper tether 32 is released, the energy absorber 30 decompresses to rotate and extend the second member 26 from the cavity 22 to retract the strap 28 onto the second member 26 .
- the first member 18 is fixed to the seatback 14 .
- the first member 18 does not move, specifically does not rotate, relative to the seatback 14 .
- the first member 18 may be indirectly fixed to the seatback 14 .
- the first member 18 may be fixed to the frame 62 and the frame 62 may be fixed to the seatback 14 .
- the first member 18 may be directly fixed to the seatback 14 .
- the first member 18 may be fixed to, for example the frame of the seatback 14 .
- the second member 26 is rotatably supported by the seatback 14 .
- the second member 26 is freely rotatable relative to the seatback 14 .
- the second member 26 has a first end 68 and a second end 70 spaced from each other along a rotational axis.
- the first end 68 is engaged with the first member 18 , as described below, and the second member 26 is rotatable relative to the seatback 14 .
- the second member 26 may be indirectly connected to the seatback 14 .
- the second end 70 may be connected to the frame 62 and the frame 62 may be fixed to the seatback 14 .
- the second end 70 and the frame 62 engage each other such that the second end 70 is freely rotatable relative to the first end 68 when the strap 28 exerts sufficient force to rotate and translate the first end 68 into the cavity 22 against the resistance of the energy absorber 30 .
- one of the first member 18 and the second member 26 defines a cavity 22 and the other of the first member 18 and the second member 26 is received in the cavity 22 .
- the energy absorber 30 is in the cavity 22 , as described further below.
- the first member 18 defines the cavity 22 and the second member 26 , specifically the first end 68 of the second member 26 , is received in the cavity 22 .
- the cavity 22 is designed, i.e., sized and shaped, to moveably receive the other of the first member 18 and the second member 26 , i.e., the second member 26 in the example shown in the Figures.
- the cavity 22 is sized so that the first end 68 of the second member 26 moves into and out of the cavity 22 as the strap 28 is paid from and retracted onto the second member 26 .
- the first member 18 and the second member 26 are designed to transmit rotation as applied by the strap 28 on the second member 26 into translation of the second member 26 relative to the first member 18 .
- the cavity 22 includes internal threads 24 and the other of the first and second member 26 being received in the cavity 22 and has external threads 26 engaged with the internal threads 24 .
- the cavity 22 includes internal threads 24 and the second end 70 of the second member 26 is received in the cavity 22 and has external threads 26 engaged with the internal threads 24 .
- the strap 28 rotates the second member 26 (i.e., clockwise in the example shown in the Figures), which translationally drives the second end 70 of the second member 26 into the cavity 22 as the external threads 26 of the second end 70 rotate relative internal threads 24 of the cavity 22 .
- This translational movement compresses the energy absorber 30 in the cavity 22 .
- the first member 18 and the second member 26 may be, for example, metal, plastic, or any suitable material to transmit translational movement of the strap 28 into rotational movement of the second member 26 into linear translation of the second member 26 relative to the first member 18 .
- the upper anchor 16 includes the frame 62 fixed to the seatback 14 .
- the frame 62 is fixed to the frame of the seatback 14 , e.g., with fasteners, welding, etc.
- the frame 62 is immoveable relative to the seatback 14 .
- the first member 18 is fixed to the frame 62 and the second member 26 is rotatably supported by the frame 62 .
- the frame 62 may include a first hole 72 that receives the first member 18 and a second hole 74 that receives the second member 26 .
- the first member 18 is fixed in the first hole 72 , i.e., is immoveable relative to the first hole 72 .
- the first member 18 may be welded (e.g., directly welded and/or via a weld nut), adhered, fastened, etc., to the frame 62 at the first hole 72 .
- the first member 18 may have a shoulder or opposing shoulders that abut the frame 62 at the first hole 72 .
- the second member 26 is mounted to the second hole 74 such that the second member 26 may rotate relative to the second hole 74 .
- the second member 26 and/or the frame 62 at the second hole 74 may include a track, bearing, etc., that allows the second member 26 to rotate relative to the frame 62 at the second hole 74 .
- the second member 26 and the second hole 74 may be sized such that the first end 68 of the second member 26 abuts the frame 62 in the second hole 74 and is free to rotate in the second hole 74 .
- the upper anchor 16 is designed to connect to the upper tether 32 such that upward movement of the upper tether 32 resulting from forward movement of the child seat 34 rotates the second member 26 .
- the upper anchor 16 includes the strap 28 on the second member 26 .
- the strap 28 is wound around the second member 26 . Accordingly, when the upper tether 32 moves upwardly when the child seat 34 moves forward relative to the seatback 14 , the upper tether 32 unwinds the strap 28 from the second member 26 as the second member 26 rotates relative to the first member 18 from the unloaded position to the loaded position. In other words, during such movement the strap 28 is paid out from the second member 26 .
- the rotation of the second member 26 relative to the first member 18 winds the strap 28 onto the second member 26 as the second member 26 rotates from the loaded position to the unloaded position.
- the strap 28 includes a proximal end 76 fixed to the second member 26 .
- the proximal end 76 moves with the second member 26 as the second member 26 rotates about the rotational axis.
- the strap 28 includes a distal end 78 spaced from the proximal end 76 .
- the upper tether 32 is connectable to the distal end 78 , e.g., by engagement of the clip 50 with a connecting ring 80 as described further below, and the distal end 78 of the strap 28 moves with the upper tether 32 as the t upper ether moves relative to the seatback 14 , e.g., upward movement of the upper tether 32 when the child seat 34 moves forward relative to the seatback 14 .
- the proximal end 76 may be fixed to the second member 26 in any suitable fashion, e.g., engagement with slot 88 in the second member 20 .
- the strap 28 and the seatback 14 may include releasable retention structure 90 therebetween for holding the strap 28 upright against the force of gravity when the strap 28 is not engaged with the upper tether 32 (i.e. in the position shown in FIG. 5 ).
- the strap 28 and the seatback 14 may include corresponding hook-and-loop fasteners therebetween, as shown in the example in the Figures.
- the releasable retention structure 90 e.g., the hook-and-loop fasteners, positions the strap 28 for engagement with the upper tether 32 , e.g., engagement of the clip 50 with the ring 80 , and is releasable to allow the strap 28 to extend from and retract onto the first member 20 during movement of the child seat 34 relative to the seatback 14 , as described further below.
- the strap 28 may be flat, i.e., having a width much larger than a thickness.
- the strap 28 may be cord-shaped, e.g., with a generally round cross section.
- the strap 28 may be fabric, as an example, and in such examples may be flat.
- the fabric may be woven nylon.
- the strap 28 may be metal (e.g., braided metal), filament (e.g., monofilament or braided filament), and in such examples may be cord-shaped.
- the upper anchor 16 may include a connecting ring 80 fixed to the strap 28 .
- the connecting ring 80 may be fixed to the distal end 78 of the strap 28 .
- the distal end 78 of the strap 28 may be sewn to the connecting ring 80 .
- the distal end 78 of the strap 28 may extend through the ring, be folded over itself, and sewn to itself.
- the connecting ring 80 is designed to be releasably engaged with the clip 50 of the tether.
- the ring may be, for example, metal.
- the connecting ring 80 is designed to transmit load between the strap 28 and the upper tether 32 during rotation of the second member 26 between the loaded and unloaded positions.
- the upper anchor 16 includes energy absorber 30 in the cavity 22 .
- the energy absorber 30 is retained in the cavity 22 as the second member 26 rotates relative to the first member 18 .
- the energy absorber 30 is compressible relative to the first member 18 and the second member 26 . Accordingly, as the second member 26 rotates from the unloaded position to the loaded position, the second member 26 compresses the energy absorber 30 between the first member 18 and the second member 26 and the energy absorber 30 absorbs energy from the second member 26 to resist payout of the strap 28 from the second member 26 .
- the energy absorber 30 may resiliently deform between the loaded and unloaded positions, as described further below. In other words, in such examples, the energy absorber 30 deforms from the unloaded position to the loaded position and returns to the pre-loaded size, shape, and position as the second member 26 rotates from the loaded position to the unloaded position.
- the upper anchor 16 is resettable when the load is removed from the strap 28 such that the upper anchor 16 automatically returns to the unloaded position, i.e., the second member 26 rotates relative to the first member 18 from the loaded position to the unloaded position.
- the energy absorber 30 may be elastic, i.e., has an initial shape and size in the unloaded position, is deformed between the first member 18 and the second member 26 as the second member 26 moves to the loaded position, and returns to the initial shape and size when the second member 26 returns to the unloaded position.
- the energy absorber 30 unloads to move the second member 26 from the loaded position to the unloaded position.
- the energy absorber 30 , the internal threads 24 , the external threads 26 , etc., may be designed such that the energy absorber 30 returns the second member 26 to the unloaded position. In the unloaded position, the energy absorber 30 is loaded less than when in the loaded position. It should be appreciated that the energy absorber 30 may be loaded in the unloaded position, albeit loaded less than in the loaded position, i.e., the energy absorber 30 may be pre-loaded when the second member 26 is in the unloaded position and further loaded as the second member 26 moves to the loaded position.
- the energy absorber 30 may be an energy-absorbing material. In such examples, the material properties of the energy absorber 30 result in the absorption of energy as the second member 26 moves to the loaded position.
- the energy absorber 30 may include a compressible fluid, as described below.
- the energy absorber 30 may be elastic foam, e.g., elastomeric foam such as elastomeric polyurethane.
- the energy absorber 30 may be a spring, e.g., a coil spring between the first member 18 and the second member 26 , a torsion spring with ends fixed to the first member 18 and the second member 26 , etc.
- the energy absorber 30 may be a compressible fluid 82 sealed in the cavity 22 between the first member 18 and the second member 26 .
- the energy absorber 30 may be a compressible fluid 82 sealed in the cavity 22 between the first member 18 and the second member 26 .
- the upper anchor 16 seals the compressible fluid 82 in the cavity 22 .
- a seal 92 may be between the first member 18 and the second member 26 .
- the seal 92 may be an elastomeric O-ring.
- the seal 92 is on the second member 20 , e.g., in a groove on the second member 20 , and the seal 92 seals to a smooth portion 94 ( FIG.
- the seal 92 rotates about axis R and/or slides along axis R relative to at least one of the first member 18 and the second member 20 and maintains a seal therebetween the retain the energy absorber 30 , e.g., the compressible fluid 82 , in the cavity 22 .
- the energy absorber 30 may include a liquid 84 and hydrophobic nanoporous particles 86 in the liquid 84 .
- the energy absorber 30 is elastically compressible between the first member 18 and the second member 26 , as described above.
- the energy absorber 30 may be made of different substances that remain separate, e.g., a colloid or a suspension.
- the energy absorber 30 may be a colloid of the hydrophobic nanoporous particles 86 in the liquid 84 .
- the liquid 84 may be any inert, i.e., nonreactive, liquid, e.g., water, lithium chloride, etc.
- the particles 86 are nanoporous, i.e., the particles have nanopores.
- the nanopores may have diameters on the order of 1 nm to 100 nm.
- the particles 86 may be, for example, silicon.
- the particles 86 are hydrophobic, that is, tending to repel water or fail to mix with water.
- the particles 86 may be formed of a material that is hydrophobic, or the particles 86 may have hydrophobic surface treatment, e.g., chlorotrimethylsilane or chlorodimethyloctylsilane in toluene.
- the unloaded position air fills the nanopores of the particles 86 , and surface tension prevents the liquid 84 from entering the nanopores, as shown in FIG. 9 A .
- a pressure is be applied to the energy absorber 30 by the first member 18 and the second member 26 .
- the pressure becomes sufficient to overcome surface tension, and the liquid 84 enters the nanopores and compresses the air inside the nanopores, as shown in FIG. 9 B .
- the energy absorber 30 may absorb energy from the child seat 34 when the liquid 84 enters the nanopores, i.e., when the energy absorber 30 is compressed to the compressed state.
- the pressure increases substantially.
- the volume of the energy absorber 30 may be reduced by as much as 80%.
- the pressure is affected by the choice of material for the particles, the average size of the particles, the number of nanopores per particle, the average size of the nanopores, the surface treatment, and the choice of liquid.
- the second member 26 is moveable from the unloaded position in which the nanopores are substantially filled with air to the second position in which the nanopores are substantially filled with the liquid 84 .
- the volume of the energy absorber 30 when the second member 26 is in the loaded position may be at most half of the volume, i.e., half or less than half of the volume, e.g., as little as 20% of the volume, of the energy absorber 30 when the second member 26 is in the unloaded position.
- the compression of the energy absorber 30 may be partially or fully reversible.
- the energy absorber 30 i.e., the compressible fluid 82 resiliently deforms between the loaded and unloaded positions.
- the compressible fluid 82 deforms from the unloaded position to the loaded position and returns to the pre-loaded size, shape, and position as the second member 26 rotates from the loaded position to the unloaded position.
- the energy absorber 30 expands from the loaded position to the unloaded position, i.e., the energy absorber 30 moves the second member 26 to the unloaded position.
- the liquid 84 evacuates, i.e., exits, the nanopores.
Abstract
A vehicle seat includes a seatback and a child seat tether anchor supported by the seatback. The child seat tether anchor has a first member fixed to the seatback and a second member rotatably supported by the seatback. One of the first member and the second member defines a cavity with internal threads and the other of the first and second member is received in the cavity and has external threads engaged with the internal threads. A strap is on the second member. An energy absorber is in the cavity. The energy absorber is compressible relative to the first member and the second member.
Description
- Child seats are removable seats for seating and restraining children riding in a vehicle. Types of child seats include rearward-facing child seats, forward-facing child seats, combination seats that can face rearward or forward, and booster seats. Rearward-facing, forward-facing, and combination child seats include a harness for restraining the child occupant. Booster seats rely on the seatbelts included with the vehicle. Child seats may be held in place by the seatbelt of the vehicle and/or may include tethers for attaching to tether attachment brackets of the vehicle.
- Vehicles are equipped with anchor for anchoring the child seat to the vehicle. Specifically, the anchor may provide for anchoring of the child seat to a vehicle seat and/or to a body of the vehicle. Child seats include anchoring for connecting the anchor of the vehicle. The anchor of the vehicle and the anchoring system of the child seat may be configured to comply with a standard, e.g., ISOFIX (e.g., ISO216), which is an international standard for attachment points for child safety seats in passenger cars; LATCH (“Lower Anchors and Tethers for Children”) in the United States; LUAS (“Lower Universal Anchorage System”); Canfix in Canada; UCSSS (“Universal Child Safety Seat System”).
-
FIG. 1 is a perspective view of a vehicle with a cut-away to show a child seat on a vehicle seat. -
FIG. 2 is a magnified view of the child seat on the vehicle seat. -
FIG. 3 is a rear view of the child seat. -
FIG. 4 is a perspective view of the child seat removed from the vehicle seat. -
FIG. 5 is a perspective view of the child seat on the vehicle seat with a tether of the child seat disengaged with a tether anchor on the vehicle seat. -
FIG. 6 is the view ofFIG. 5 with the tether of the child seat engaged with the tether anchor on the vehicle seat. -
FIG. 7 is a perspective view of the tether anchor. -
FIG. 8 is an exploded view of the tether anchor with a portion shown in cross-section to illustrate the location of a compressible fluid in a cavity of the tether anchor when assembled inFIG. 7 . -
FIG. 9A is a diagram of the compressible fluid including a liquid and hydrophobic nanoporous particles in the liquid in the uncompressed state. -
FIG. 9B is a diagram of the compressible fluid ofFIG. 9A in the compressed state. - A vehicle seat includes a seatback and a child seat tether anchor supported by the seatback. The child seat tether anchor has a first member fixed to the seatback and a second member rotatably supported by the seatback. One of the first member and the second member defines a cavity with internal threads and the other of the first and second member is received in the cavity and has external threads engaged with the internal threads. The vehicle seat includes a strap on the second member. An energy absorber is in the cavity. The energy absorber is compressible relative to the first member and the second member.
- The strap may be wound around the second member.
- The vehicle seat may includes a connecting ring fixed to the strap. The strap may include a proximal end fixed to the second member and a distal end spaced from the proximal end. The connecting ring may be fixed to the distal end.
- The vehicle seat may include a connecting ring fixed to the strap. The strap may include a proximal end fixed to the second member and a distal end spaced from the proximal end. The connecting ring may be fixed to the distal end.
- The child seat tether anchor may include a frame fixed to the seatback. The first member may be fixed to the frame and the second member may be rotatably supported by the frame. The frame may include a hole that rotatably receives the second member.
- The second member may have a first end and a second end spaced from each other along a rotational axis. The threads may be on the first end and the second end engage the hole.
- The energy absorber may be a compressible fluid sealed in the cavity between the first member and the second member.
- The energy absorber may be a compressible liquid sealed in the cavity between the first member and the second member.
- The energy absorber may include a liquid and hydrophobic nanoporous particles in the liquid.
- An assembly includes a seat having a seatback and a child seat anchored to the seat and having a tether. An anchor is supported by the seatback. The anchor has a first member fixed to the seatback and a second member rotatably supported by the seatback. One of the first member and the second member defines a cavity with internal threads and the other of the first and second member is received in the cavity and has external threads engaged with the internal threads. A strap is on the second member. The tether of the child seat is connected to the strap. An energy absorber is in the cavity. The energy absorber is compressible relative to the first member and the second member.
- The strap may be wound around the second member.
- The vehicle seat may include a ring fixed to the strap. The strap may include a proximal end fixed to the second member and a distal end spaced from the proximal end. The ring may be fixed to the distal end. The tether may be connected to the ring.
- The vehicle seat may include a ring fixed to the strap. The strap includes a proximal end fixed to the second member and a distal end spaced from the proximal end. The ring may be fixed to the distal end. The tether may be connected to the ring.
- The energy absorber may be a compressible fluid sealed in the cavity between the first member and the second member.
- The energy absorber may be a compressible liquid sealed in the cavity between the first member and the second member.
- The energy absorber may include a liquid and hydrophobic nanoporous particles in the liquid.
- The second member may be rotatable relative to the first member between a loaded position that loads the energy absorber and an unloaded position that unloads the energy absorber relative to the loaded position. The energy absorber may resiliently deform between the loaded and unloaded positions.
- With reference to the Figures, wherein like numerals indicate like parts throughout the several views, a
vehicle seat 12 includes aseatback 14 and achild seat 34 tether anchor (hereinafter referred to as “upper anchor 16”) supported by theseatback 14. Theupper anchor 16 has afirst member 18 fixed to theseatback 14 and asecond member 26 rotatably supported by theseatback 14. One of thefirst member 18 and thesecond member 26 defines acavity 22 withinternal threads 24 and the other of the first andsecond member 26 is received in thecavity 22 and hasexternal threads 26 engaged with theinternal threads 24. Astrap 28 is on thesecond member 26. Anenergy absorber 30 is in thecavity 22. Theenergy absorber 30 is compressible relative to thefirst member 18 and thesecond member 26. - An
upper tether 32 of achild seat 34 is connectable to thestrap 28 of theupper anchor 16, as described further below. During a vehicle impact that urges thechild seat 34 vehicle-forward, the tether pulls thestrap 28 to rotate thesecond member 26 relative to thefirst member 18. Specifically, the engagement of theinternal threads 24 andexternal threads 26 translates thesecond member 26 relative to thefirst member 18. This relative rotation allows for payout of thestrap 28 from thesecond member 26 and a limited amount of forward movement of thechild seat 34. The relative translation compresses theenergy absorber 30 so that theenergy absorber 30 absorbs energy to slow and limit the movement of thechild seat 34. In other words, theupper anchor 16 acts as a load limiter. The rotational engagement of thefirst member 18 and thesecond member 26 reduces the footprint of theupper anchor 16 to reduce packaging constraints. - The
vehicle 10 may be any suitable type of automobile, e.g., a passenger or commercial automobile such as a sedan, a coupe, a truck, a sport utility vehicle, a crossover vehicle, a van, a minivan, a taxi, a bus, etc. Thevehicle 10, for example, may be an autonomous vehicle. In other words, thevehicle 10 may be autonomously operated such that thevehicle 10 may be driven without constant attention from a driver, i.e., thevehicle 10 may be self-driving without human input. - The
vehicle 10 includes avehicle body 36 that may be of a unibody construction, a body-on-frame construction (also referred to as a cab-on-frame construction), or any other suitable construction. Thevehicle body 36 may be of any suitable material, for example, steel, aluminum, and/or fiber-reinforced plastic, etc. - The
vehicle body 36 may define apassenger cabin 38 to house occupants, if any, of thevehicle 10. Thepassenger cabin 38 may extend across thevehicle 10, i.e., from one side to the other side of thevehicle 10. Thepassenger cabin 38 includes a front end and a rear end with the front end being in front of the rear end during forward movement of thevehicle 10. - The
vehicle 10 includes one or more vehicle seats 12 in thepassenger cabin 38. Thevehicle 10 may include any suitable number of vehicle seats 12. The vehicle seats 12 may be arranged in thepassenger cabin 38 in any suitable position, i.e., as front seats, rear seats, third-row seats, etc. Thevehicle seat 12 may be movable relative to the floor to various positions, e.g., movable fore-and-aft and/or cross-vehicle. The vehicle seats 12 may be of any suitable type, e.g., a bucket seat. Any suitable number of the vehicle seats 12, i.e., one or more, may include theupper anchor 16. - The
vehicle seat 12 includes theseatback 14 and aseat bottom 40. Theseatback 14 may be supported by the seat bottom 40 and may be stationary or movable relative to theseat bottom 40. Theseatback 14 and the seat bottom 40 may be adjustable in multiple degrees of freedom. Specifically, theseatback 14 and the seat bottom 40 may themselves be adjustable, in other words, adjustable components within theseatback 14 and/or the seat bottom 40, and/or may be adjustable relative to each other. - The
vehicle seat 12, specifically theseatback 14 and the seat bottom 40, includes a seat frame and a covering supported on the seat frame. The seat frame may include tubes, beams, etc. The seat frame may be of any suitable metal (e.g., steel, aluminum, etc.), of any suitable plastic material (e.g., carbon fiber reinforced plastic (CFRP), glass fiber-reinforced semi-finished thermoplastic composite (organosheet), etc.), or any other suitable material. - The covering may include upholstery and padding. The upholstery may be cloth, leather, faux leather, or any other suitable material. The upholstery may be stitched in panels around the frame. The padding may be between the covering and the seat frame and may be foam or any other suitable material.
- The
vehicle seat 12 defines an occupant-seating area 42. Thechild seat 34 may be disposed in the occupant-seating area 42 when installed, as shown in the Figures. The occupant-seating area 42 of thevehicle seat 12 may be above the seat bottom 40 and on a front side of theseatback 14. - The
vehicle seat 12 includes at least oneanchor anchor vehicle seat 12. For example, theanchor seatback 14. Theanchor child seat 34 to thevehicle seat 12 to control the position of thechild seat 34 on thevehicle seat 12 when thechild seat 34 is engaged with theanchor anchor vehicle body 36, e.g., a pillar, floor, etc. Theanchor clip 50 of thechild seat 34, as described further below. - The
vehicle seat 12 may include more anchor. As one example, thevehicle seat 12 may include theupper anchor 16 on theseatback 14, as described further below. In the example shown in the Figures, thevehicle seat 12 may also include two other anchors (in this example referred to as “lower anchors 44”) at the intersection of the seat bottom 40 and theseatback 14. The lower anchors 44 may be between the seat bottom 40 andseatback 14, e.g., such that thelower anchors 44 may be accessed by compressing the covering of theseatback 14 and/orseat bottom 40. Theupper anchor 16 may be accessible on the vehicle-rearward side of theseatback 14. - The
anchors anchors child seat 34 may be configured to comply with LATCH (“Lower anchors and Tethers for Children”) in the United States, LUAS (“Lower Universal Anchorage System”) or Canfix in Canada, and/or UCSSS (“Universal Child Safety Seat System”). Specifically, theanchors - The
child seat 34 is anchored to thevehicle seat 12 with theanchors child seat 34 is designed to control kinematics of a child, e.g., a human having a certain, age, height, weight, etc., during avehicle 10 collision. Thechild seat 34 is configured for installation in thevehicle 10. When installed in thevehicle 10, thechild seat 34 is supported by thevehicle seat 12. For example, thechild seat 34 may sit atop the seat bottom 40 and abut theseatback 14. Thechild seat 34 may be installed in a rearward-facing orientation, i.e., where the occupant of thechild seat 34 faces a rear of thevehicle 10, as shown in the example in the Figures. In other examples, thechild seat 34 may be installed in a forward-facing orientation, i.e., where the occupant of thechild seat 34 faces a front of thevehicle 10. - The
child seat 34 is designed to receive a child. Thechild seat 34 may include a seating portion having a bottom 52 and a back 54, e.g., for a child to sit on and recline against. Thechild seat 34 may include a base 56 supporting the seating portion. The base 56 may be below the bottom 52 and/or behind theback 54. The bottom 52 and/or back 54 may pivot relative to thebase 56, e.g., to change an angle of the bottom 52 and/or back 54 of thechild seat 34 relative to thevehicle seat 12 supporting thechild seat 34. The bottom 52 and/or the back 54 may be upholstered, padded, etc. The base 56 may be rigid relative to the bottom 52 and/or the back 54. For example, thebase 56 may be of rigid material including material types such as plastic, metal, etc. - The
child seat 34 may be configured to comply with a standard. As an example, thechild seat 34 may be configured to comply with ISOFIX (e.g., ISO216), which is an international standard for attachment points for child safety seats in passenger cars. In addition or as other examples, thechild seat 34 may be configured to comply with LATCH (“Lower anchors and Tethers for Children”) in the United States, LUAS (“Lower Universal Anchorage System”) or Canfix in Canada, and/or UCSSS (“Universal Child Safety Seat System”). - The
child seat 34 includes at least onetether child seat 34 may include onetether anchor vehicle seat 12 on which thechild seat 34 is supported. For example, in the example shown in the Figures, thechild seat 34 includes twolower tethers 46 and oneupper tether 32. Thetethers base 56, the bottom 52, and/or the back 54. Engagement of thetethers anchors child seat 34 to thevehicle seat 12. In addition to or in the alternative to some of thetethers lower tethers 46, thechild seat 34 may be engageable with the seatbelt of thevehicle seat 12 to anchor thechild seat 34 to thevehicle seat 12, as is known. - One or more of the
tethers child seat 34 may includewebbing 48 and aclip 50 engaged with thewebbing 48. In such an example thewebbing 48 is fixed directly to thebase 56, the bottom 52, and/or the back 54 and theclips 50 are releasably engageable with theanchors vehicle seat 12. Theclips 50, may include an open loop and flexible gate, may be “alligator” style defining a slot with a button actuated latch, or any other suitable configuration for connecting the respective anchor. Theclips 50 may be configured for attachment to theanchor - The
webbing 48 may extend through openings of thebase 56, the bottom 52, and/or the back 54. Thewebbing 48 may be looped around components of thebase 56, the bottom 52, and/or the back 54 and sewn to itself. Theclips 50 may be fixed to adistal end 78 of thewebbing 48. For example, a loop may be sewn at thedistal end 78 and extend through an opening of theclips 50. As another example, theclip 50 may be slideably secured to thewebbing 48. - The
tether adjustment mechanism 58 for adjusting the length of thetether tether anchor upper tether 32 in the example shown in the Figures includes theadjustment mechanism 58. Theadjustment mechanism 58 may include any suitable structure to adjust the length of thetether - The
child seat 34 includes aharness 60 that controls kinematics of a child in thechild seat 34, e.g., when thechild seat 34 is installed in thevehicle 10 and during an impact to thevehicle 10. Theharness 60 may include multiple portions ofwebbing 48 that are releasably securable to each other, e.g., via a buckle and latch plates including those that are known. Theharness 60 may be designed to extends across shoulders and a chest of the child in thechild seat 34. Theharness 60 may be designed to extends across hips of the child in thechild seat 34. Theharness 60 may be designed to extend between legs of the child in thechild seat 34, e.g., to prevent “submarining” of the child during an impact to thevehicle 10. - The
harness 60 is connected to thebase 56, the bottom 52, and/or the back 54. For example, theharness 60 may extend around and/or through slots in thebase 56, the bottom 52, and/or the back 54. Theharness 60 may include a selectively engageable clamp that enables adjustment of a length of one or more portions of the harness, e.g., to adjust a size of the harness to accommodate a size of the child in thechild seat 34. - The buckle of the
child seat 34 assembly selectively secures portions of thewebbing 48 relative to each other. For example, the buckle may define a slot designed to receive one or more latch plates, supposed by the portions. The buckle may engage the latch plates, upon their insertion into the slot and restrict removal therefrom. The buckle may include a button that, upon depression, disengages the buckle from the latch plates, and permits removal of the latch plates, from the slot(s) of the buckle. The latch plates are designed to be received by and selectively engageable with the buckle. For example, the latch plates may include an opening or other feature designed to engage with a latch of the buckle. The latch plates are supported by the harness. - As set forth above, the
upper anchor 16 is on theseatback 14 for releasable connection with theupper tether 32 of thechild seat 34. Theupper anchor 16 has thefirst member 18, thesecond member 26, and thestrap 28. In some examples, such as the example shown in the Figures, theupper anchor 16 includes aframe 62 fixed to theseatback 14 and supporting thefirst member 18 and thesecond member 26. As described further below, theenergy absorber 30 is between thefirst member 18 and thesecond member 26 and absorbs energy during rotation of thesecond member 26 relative to thefirst member 18. For example, during a vehicle impact that urges thechild seat 34 vehicle-forward, theupper tether 32 pulls thestrap 28, which rotates thesecond member 26 relative to thefirst member 18 and translates thesecond member 26 relative to thefirst member 18. This relative rotation allows for payout of thestrap 28 from thesecond member 26 and a limited amount of forward movement of thechild seat 34. The relative translation compresses theenergy absorber 30 so that theenergy absorber 30 absorbs energy to slow and limit the movement of thechild seat 34. In other words, theupper anchor 16 acts as a load limiter. This may reduce compression of theharness 60 on the occupant of thechild seat 34. When theenergy absorber 30 is fully compressed, as described further below, theenergy absorber 30 prevents further rotation of thesecond member 26 relative to thefirst member 18 to prevent further relative rotation of thefirst member 18 and thesecond member 26. Theupper anchor 16 may be resettable. In such an example, theenergy absorber 30 is resilient and, when force on thestrap 28 from theupper tether 32 is released, theenergy absorber 30 decompresses to rotate and extend thesecond member 26 from thecavity 22 to retract thestrap 28 onto thesecond member 26. - The
first member 18 is fixed to theseatback 14. In other words, during operation of thevehicle 10 with theupper tether 32 engaged with theupper anchor 16, thefirst member 18 does not move, specifically does not rotate, relative to theseatback 14. Thefirst member 18 may be indirectly fixed to theseatback 14. As an example, thefirst member 18 may be fixed to theframe 62 and theframe 62 may be fixed to theseatback 14. As another example, thefirst member 18 may be directly fixed to theseatback 14. Thefirst member 18 may be fixed to, for example the frame of theseatback 14. - The
second member 26 is rotatably supported by theseatback 14. In other words, thesecond member 26 is freely rotatable relative to theseatback 14. Specifically, thesecond member 26 has afirst end 68 and asecond end 70 spaced from each other along a rotational axis. Thefirst end 68 is engaged with thefirst member 18, as described below, and thesecond member 26 is rotatable relative to theseatback 14. Thesecond member 26 may be indirectly connected to theseatback 14. As an example thesecond end 70 may be connected to theframe 62 and theframe 62 may be fixed to theseatback 14. In such an example, thesecond end 70 and theframe 62 engage each other such that thesecond end 70 is freely rotatable relative to thefirst end 68 when thestrap 28 exerts sufficient force to rotate and translate thefirst end 68 into thecavity 22 against the resistance of theenergy absorber 30. - As set forth above, one of the
first member 18 and thesecond member 26 defines acavity 22 and the other of thefirst member 18 and thesecond member 26 is received in thecavity 22. Theenergy absorber 30 is in thecavity 22, as described further below. In the example shown in the Figures, thefirst member 18 defines thecavity 22 and thesecond member 26, specifically thefirst end 68 of thesecond member 26, is received in thecavity 22. - The
cavity 22 is designed, i.e., sized and shaped, to moveably receive the other of thefirst member 18 and thesecond member 26, i.e., thesecond member 26 in the example shown in the Figures. With reference to the example shown in the Figures, thecavity 22 is sized so that thefirst end 68 of thesecond member 26 moves into and out of thecavity 22 as thestrap 28 is paid from and retracted onto thesecond member 26. - The
first member 18 and thesecond member 26 are designed to transmit rotation as applied by thestrap 28 on thesecond member 26 into translation of thesecond member 26 relative to thefirst member 18. For example, thecavity 22 includesinternal threads 24 and the other of the first andsecond member 26 being received in thecavity 22 and hasexternal threads 26 engaged with theinternal threads 24. Specifically, in the example shown in the Figures, thecavity 22 includesinternal threads 24 and thesecond end 70 of thesecond member 26 is received in thecavity 22 and hasexternal threads 26 engaged with theinternal threads 24. Accordingly, as thestrap 28 is pulled upwardly by theupper tether 32, thestrap 28 rotates the second member 26 (i.e., clockwise in the example shown in the Figures), which translationally drives thesecond end 70 of thesecond member 26 into thecavity 22 as theexternal threads 26 of thesecond end 70 rotate relativeinternal threads 24 of thecavity 22. This translational movement compresses theenergy absorber 30 in thecavity 22. - The
first member 18 and thesecond member 26 may be, for example, metal, plastic, or any suitable material to transmit translational movement of thestrap 28 into rotational movement of thesecond member 26 into linear translation of thesecond member 26 relative to thefirst member 18. - As set forth above, in some examples including the example shown in the Figures, the
upper anchor 16 includes theframe 62 fixed to theseatback 14. Specifically, theframe 62 is fixed to the frame of theseatback 14, e.g., with fasteners, welding, etc. Theframe 62 is immoveable relative to theseatback 14. Thefirst member 18 is fixed to theframe 62 and thesecond member 26 is rotatably supported by theframe 62. As an example, theframe 62 may include afirst hole 72 that receives thefirst member 18 and asecond hole 74 that receives thesecond member 26. In such an example, thefirst member 18 is fixed in thefirst hole 72, i.e., is immoveable relative to thefirst hole 72. As an example, thefirst member 18 may be welded (e.g., directly welded and/or via a weld nut), adhered, fastened, etc., to theframe 62 at thefirst hole 72. Thefirst member 18 may have a shoulder or opposing shoulders that abut theframe 62 at thefirst hole 72. Thesecond member 26 is mounted to thesecond hole 74 such that thesecond member 26 may rotate relative to thesecond hole 74. For example, thesecond member 26 and/or theframe 62 at thesecond hole 74 may include a track, bearing, etc., that allows thesecond member 26 to rotate relative to theframe 62 at thesecond hole 74. As another example, thesecond member 26 and thesecond hole 74 may be sized such that thefirst end 68 of thesecond member 26 abuts theframe 62 in thesecond hole 74 and is free to rotate in thesecond hole 74. - The
upper anchor 16 is designed to connect to theupper tether 32 such that upward movement of theupper tether 32 resulting from forward movement of thechild seat 34 rotates thesecond member 26. In the example shown in the Figures, theupper anchor 16 includes thestrap 28 on thesecond member 26. In such an example, thestrap 28 is wound around thesecond member 26. Accordingly, when theupper tether 32 moves upwardly when thechild seat 34 moves forward relative to theseatback 14, theupper tether 32 unwinds thestrap 28 from thesecond member 26 as thesecond member 26 rotates relative to thefirst member 18 from the unloaded position to the loaded position. In other words, during such movement thestrap 28 is paid out from thesecond member 26. In examples in which theupper anchor 16 is resettable, the rotation of thesecond member 26 relative to thefirst member 18 winds thestrap 28 onto thesecond member 26 as thesecond member 26 rotates from the loaded position to the unloaded position. - Specifically, the
strap 28 includes aproximal end 76 fixed to thesecond member 26. In other words, theproximal end 76 moves with thesecond member 26 as thesecond member 26 rotates about the rotational axis. Thestrap 28 includes adistal end 78 spaced from theproximal end 76. Theupper tether 32 is connectable to thedistal end 78, e.g., by engagement of theclip 50 with a connectingring 80 as described further below, and thedistal end 78 of thestrap 28 moves with theupper tether 32 as the t upper ether moves relative to theseatback 14, e.g., upward movement of theupper tether 32 when thechild seat 34 moves forward relative to theseatback 14. Theproximal end 76 may be fixed to thesecond member 26 in any suitable fashion, e.g., engagement withslot 88 in thesecond member 20. Thestrap 28 and theseatback 14 may includereleasable retention structure 90 therebetween for holding thestrap 28 upright against the force of gravity when thestrap 28 is not engaged with the upper tether 32 (i.e. in the position shown inFIG. 5 ). As an example, thestrap 28 and theseatback 14 may include corresponding hook-and-loop fasteners therebetween, as shown in the example in the Figures. Thereleasable retention structure 90, e.g., the hook-and-loop fasteners, positions thestrap 28 for engagement with theupper tether 32, e.g., engagement of theclip 50 with thering 80, and is releasable to allow thestrap 28 to extend from and retract onto thefirst member 20 during movement of thechild seat 34 relative to theseatback 14, as described further below. - The
strap 28 may be flat, i.e., having a width much larger than a thickness. In other examples, thestrap 28 may be cord-shaped, e.g., with a generally round cross section. Thestrap 28 may be fabric, as an example, and in such examples may be flat. The fabric may be woven nylon. As another example, thestrap 28 may be metal (e.g., braided metal), filament (e.g., monofilament or braided filament), and in such examples may be cord-shaped. - The
upper anchor 16 may include a connectingring 80 fixed to thestrap 28. Specifically, the connectingring 80 may be fixed to thedistal end 78 of thestrap 28. Thedistal end 78 of thestrap 28 may be sewn to the connectingring 80. For example, thedistal end 78 of thestrap 28 may extend through the ring, be folded over itself, and sewn to itself. The connectingring 80 is designed to be releasably engaged with theclip 50 of the tether. The ring may be, for example, metal. The connectingring 80 is designed to transmit load between thestrap 28 and theupper tether 32 during rotation of thesecond member 26 between the loaded and unloaded positions. - The
upper anchor 16 includesenergy absorber 30 in thecavity 22. Theenergy absorber 30 is retained in thecavity 22 as thesecond member 26 rotates relative to thefirst member 18. Theenergy absorber 30 is compressible relative to thefirst member 18 and thesecond member 26. Accordingly, as thesecond member 26 rotates from the unloaded position to the loaded position, thesecond member 26 compresses theenergy absorber 30 between thefirst member 18 and thesecond member 26 and theenergy absorber 30 absorbs energy from thesecond member 26 to resist payout of thestrap 28 from thesecond member 26. Theenergy absorber 30 may resiliently deform between the loaded and unloaded positions, as described further below. In other words, in such examples, theenergy absorber 30 deforms from the unloaded position to the loaded position and returns to the pre-loaded size, shape, and position as thesecond member 26 rotates from the loaded position to the unloaded position. - In some examples, including the example shown in the Figures, the
upper anchor 16 is resettable when the load is removed from thestrap 28 such that theupper anchor 16 automatically returns to the unloaded position, i.e., thesecond member 26 rotates relative to thefirst member 18 from the loaded position to the unloaded position. In such examples, theenergy absorber 30 may be elastic, i.e., has an initial shape and size in the unloaded position, is deformed between thefirst member 18 and thesecond member 26 as thesecond member 26 moves to the loaded position, and returns to the initial shape and size when thesecond member 26 returns to the unloaded position. Specifically, in such an example, when the load is removed from thestrap 28, theenergy absorber 30 unloads to move thesecond member 26 from the loaded position to the unloaded position. Theenergy absorber 30, theinternal threads 24, theexternal threads 26, etc., may be designed such that theenergy absorber 30 returns thesecond member 26 to the unloaded position. In the unloaded position, theenergy absorber 30 is loaded less than when in the loaded position. It should be appreciated that theenergy absorber 30 may be loaded in the unloaded position, albeit loaded less than in the loaded position, i.e., theenergy absorber 30 may be pre-loaded when thesecond member 26 is in the unloaded position and further loaded as thesecond member 26 moves to the loaded position. - The
energy absorber 30 may be an energy-absorbing material. In such examples, the material properties of theenergy absorber 30 result in the absorption of energy as thesecond member 26 moves to the loaded position. As an example, theenergy absorber 30 may include a compressible fluid, as described below. As another example, theenergy absorber 30 may be elastic foam, e.g., elastomeric foam such as elastomeric polyurethane. In other examples, theenergy absorber 30 may be a spring, e.g., a coil spring between thefirst member 18 and thesecond member 26, a torsion spring with ends fixed to thefirst member 18 and thesecond member 26, etc. - The
energy absorber 30 may be a compressible fluid 82 sealed in thecavity 22 between thefirst member 18 and thesecond member 26. Specifically, theenergy absorber 30 may be a compressible fluid 82 sealed in thecavity 22 between thefirst member 18 and thesecond member 26. In such examples, theupper anchor 16 seals the compressible fluid 82 in thecavity 22. As an example, aseal 92 may be between thefirst member 18 and thesecond member 26. Theseal 92, for example, may be an elastomeric O-ring. In the example shown in the Figures, theseal 92 is on thesecond member 20, e.g., in a groove on thesecond member 20, and theseal 92 seals to a smooth portion 94 (FIG. 8 ) along thecavity 22. In such an example, theseal 92 rotates about axis R and/or slides along axis R relative to at least one of thefirst member 18 and thesecond member 20 and maintains a seal therebetween the retain theenergy absorber 30, e.g., the compressible fluid 82, in thecavity 22. - As an example of a compressible fluid 82, the
energy absorber 30 may include a liquid 84 and hydrophobicnanoporous particles 86 in the liquid 84. In such an example, theenergy absorber 30 is elastically compressible between thefirst member 18 and thesecond member 26, as described above. Theenergy absorber 30 may be made of different substances that remain separate, e.g., a colloid or a suspension. For example, theenergy absorber 30 may be a colloid of thehydrophobic nanoporous particles 86 in the liquid 84. The liquid 84 may be any inert, i.e., nonreactive, liquid, e.g., water, lithium chloride, etc. - The
particles 86 are nanoporous, i.e., the particles have nanopores. The nanopores may have diameters on the order of 1 nm to 100 nm. Theparticles 86 may be, for example, silicon. Theparticles 86 are hydrophobic, that is, tending to repel water or fail to mix with water. Theparticles 86 may be formed of a material that is hydrophobic, or theparticles 86 may have hydrophobic surface treatment, e.g., chlorotrimethylsilane or chlorodimethyloctylsilane in toluene. - In the unloaded position, air fills the nanopores of the
particles 86, and surface tension prevents the liquid 84 from entering the nanopores, as shown inFIG. 9A . As thesecond member 26 moves from the unloaded position to the loaded position, a pressure is be applied to theenergy absorber 30 by thefirst member 18 and thesecond member 26. In the loaded position, the pressure becomes sufficient to overcome surface tension, and the liquid 84 enters the nanopores and compresses the air inside the nanopores, as shown inFIG. 9B . Theenergy absorber 30 may absorb energy from thechild seat 34 when the liquid 84 enters the nanopores, i.e., when theenergy absorber 30 is compressed to the compressed state. Once the nanopores are mostly full of the liquid, in the compressed state, the pressure increases substantially. The volume of theenergy absorber 30 may be reduced by as much as 80%. The pressure is affected by the choice of material for the particles, the average size of the particles, the number of nanopores per particle, the average size of the nanopores, the surface treatment, and the choice of liquid. - The
second member 26 is moveable from the unloaded position in which the nanopores are substantially filled with air to the second position in which the nanopores are substantially filled with the liquid 84. The volume of theenergy absorber 30 when thesecond member 26 is in the loaded position may be at most half of the volume, i.e., half or less than half of the volume, e.g., as little as 20% of the volume, of theenergy absorber 30 when thesecond member 26 is in the unloaded position. - The compression of the
energy absorber 30 may be partially or fully reversible. In the example shown in the Figures, theenergy absorber 30, i.e., the compressible fluid 82 resiliently deforms between the loaded and unloaded positions. In other words, in such examples, the compressible fluid 82 deforms from the unloaded position to the loaded position and returns to the pre-loaded size, shape, and position as thesecond member 26 rotates from the loaded position to the unloaded position. After the load on thechild seat 34 subsides, theenergy absorber 30 expands from the loaded position to the unloaded position, i.e., theenergy absorber 30 moves thesecond member 26 to the unloaded position. In this situation, as the pressure decreases, the air compressed in the nanopores expands, and the volume occupied by theenergy absorber 30 expands. In other words, the liquid 84 evacuates, i.e., exits, the nanopores. - The disclosure has been described in an illustrative manner, and it is to be understood that the terminology which has been used is intended to be in the nature of words of description rather than of limitation. Many modifications and variations of the present disclosure are possible in light of the above teachings, and the disclosure may be practiced otherwise than as specifically described.
Claims (18)
1. A vehicle seat comprising:
a seatback;
a child seat tether anchor supported by the seatback;
the child seat tether anchor having a first member fixed to the seatback and a second member rotatably supported by the seatback, one of the first member and the second member defining a cavity with internal threads and the other of the first and second member being received in the cavity and having external threads engaged with the internal threads;
a strap on the second member; and
an energy absorber in the cavity, the energy absorber being compressible relative to the first member and the second member.
2. The vehicle seat as set forth in claim 1 , wherein the strap is wound around the second member.
3. The vehicle seat as set forth in claim 2 , further comprising a connecting ring fixed to the strap, the strap including a proximal end fixed to the second member and a distal end spaced from the proximal end, the connecting ring being fixed to the distal end.
4. The vehicle seat as set forth in claim 1 , further comprising a connecting ring fixed to the strap, the strap including a proximal end fixed to the second member and a distal end spaced from the proximal end, the connecting ring being fixed to the distal end.
5. The vehicle seat as set forth in claim 1 , wherein the child seat tether anchor includes a frame fixed to the seatback, the first member being fixed to the frame and the second member being rotatably supported by the frame.
6. The vehicle seat as set forth in claim 5 , wherein the frame includes a hole that rotatably receives the second member.
7. The vehicle seat as set forth in claim 1 , wherein the second member has a first end and a second end spaced from each other along a rotational axis, the threads being on the first end and the second end engaging the hole.
8. The vehicle seat as set forth in claim 1 , wherein the energy absorber is a compressible fluid sealed in the cavity between the first member and the second member.
9. The vehicle as set forth in claim 1 , wherein the energy absorber is a compressible liquid sealed in the cavity between the first member and the second member.
10. The vehicle as set forth in claim 1 , wherein the energy absorber includes a liquid and hydrophobic nanoporous particles in the liquid.
11. An assembly comprising:
a seat having a seatback;
a child seat anchored to the seat and having a tether;
an anchor supported by the seatback;
the anchor having a first member fixed to the seatback and a second member rotatably supported by the seatback, one of the first member and the second member defining a cavity with internal threads and the other of the first and second member being received in the cavity and having external threads engaged with the internal threads;
a strap on the second member, the tether of the child seat connected to the strap; and
an energy absorber in the cavity, the energy absorber being compressible relative to the first member and the second member.
12. The vehicle seat as set forth in claim 11 , wherein the strap is wound around the second member.
13. The vehicle seat as set forth in claim 12 , further comprising a ring fixed to the strap, the strap including a proximal end fixed to the second member and a distal end spaced from the proximal end, the ring being fixed to the distal end, and the tether being connected to the ring.
14. The vehicle seat as set forth in claim 11 , further comprising a ring fixed to the strap, the strap including a proximal end fixed to the second member and a distal end spaced from the proximal end, the ring being fixed to the distal end, and the tether being connected to the ring.
15. The vehicle seat as set forth in claim 11 , wherein the energy absorber is a compressible fluid sealed in the cavity between the first member and the second member.
16. The vehicle as set forth in claim 11 , wherein the energy absorber is a compressible liquid sealed in the cavity between the first member and the second member.
17. The vehicle as set forth in claim 11 , wherein the energy absorber includes a liquid and hydrophobic nanoporous particles in the liquid.
18. The vehicle as set forth in claim 1 , wherein the second member is rotatable relative to the first member between a loaded position that loads the energy absorber and an unloaded position that unloads the energy absorber relative to the loaded position, the energy absorber resiliently deforming between the loaded and unloaded positions.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US17/812,465 US20240017649A1 (en) | 2022-07-14 | 2022-07-14 | Child seat anchor including energy absorber |
CN202310804552.7A CN117429328A (en) | 2022-07-14 | 2023-07-03 | Child seat anchor including an energy absorber |
DE102023117762.1A DE102023117762A1 (en) | 2022-07-14 | 2023-07-05 | CHILD SEAT ANCHOR, INCLUDING AN ENERGY ABSORBER |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US17/812,465 US20240017649A1 (en) | 2022-07-14 | 2022-07-14 | Child seat anchor including energy absorber |
Publications (1)
Publication Number | Publication Date |
---|---|
US20240017649A1 true US20240017649A1 (en) | 2024-01-18 |
Family
ID=89429366
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US17/812,465 Pending US20240017649A1 (en) | 2022-07-14 | 2022-07-14 | Child seat anchor including energy absorber |
Country Status (3)
Country | Link |
---|---|
US (1) | US20240017649A1 (en) |
CN (1) | CN117429328A (en) |
DE (1) | DE102023117762A1 (en) |
Citations (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5611498A (en) * | 1995-08-11 | 1997-03-18 | Alliedsignal Inc. | Seat belt retractor with auxiliary shaft load limiting |
EP1262383A2 (en) * | 2001-06-01 | 2002-12-04 | BRITAX RÖMER Kindersicherheit GmbH | Connector for child safety seat |
JP2003048467A (en) * | 2001-08-07 | 2003-02-18 | Shigeru Co Ltd | Mounting structure for child seat |
US20030173817A1 (en) * | 2002-03-05 | 2003-09-18 | Vits Charles G. | Passenger restraint system |
US20040051356A1 (en) * | 2002-09-17 | 2004-03-18 | Neelis Jeffrey C. | Vehicle anchorage system for child seat |
US20050225138A1 (en) * | 2004-03-26 | 2005-10-13 | Faurecia | Vehicle seat backrest suitable for allowing the attachment of a child seat and vehicle seat comprising such a backrest |
US20110193394A1 (en) * | 2010-02-05 | 2011-08-11 | Ford Global Technologies, Llc | Child Seat Tethering System |
US20160152164A1 (en) * | 2013-07-16 | 2016-06-02 | BRITAX RÖMER Kindersicherheit GmbH | Child safety seat |
US20170197527A1 (en) * | 2016-01-12 | 2017-07-13 | GM Global Technology Operations LLC | Tether hook bracket with rebound blocker |
US20180297496A1 (en) * | 2017-04-18 | 2018-10-18 | Ford Global Technologies, Llc | Child-seat restraint system |
CA3016034A1 (en) * | 2017-09-19 | 2019-03-19 | Britax Child Safety, Inc. | Quick connect coupler for a child safety seat top tether |
US20210070244A1 (en) * | 2019-09-10 | 2021-03-11 | Wonderland Switzerland Ag | Child Safety Seat |
US20220212579A1 (en) * | 2019-04-17 | 2022-07-07 | Proprietect L.P. | Vehicular seat |
-
2022
- 2022-07-14 US US17/812,465 patent/US20240017649A1/en active Pending
-
2023
- 2023-07-03 CN CN202310804552.7A patent/CN117429328A/en active Pending
- 2023-07-05 DE DE102023117762.1A patent/DE102023117762A1/en active Pending
Patent Citations (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5611498A (en) * | 1995-08-11 | 1997-03-18 | Alliedsignal Inc. | Seat belt retractor with auxiliary shaft load limiting |
EP1262383A2 (en) * | 2001-06-01 | 2002-12-04 | BRITAX RÖMER Kindersicherheit GmbH | Connector for child safety seat |
JP2003048467A (en) * | 2001-08-07 | 2003-02-18 | Shigeru Co Ltd | Mounting structure for child seat |
US20030173817A1 (en) * | 2002-03-05 | 2003-09-18 | Vits Charles G. | Passenger restraint system |
US20040051356A1 (en) * | 2002-09-17 | 2004-03-18 | Neelis Jeffrey C. | Vehicle anchorage system for child seat |
US20050225138A1 (en) * | 2004-03-26 | 2005-10-13 | Faurecia | Vehicle seat backrest suitable for allowing the attachment of a child seat and vehicle seat comprising such a backrest |
US20110193394A1 (en) * | 2010-02-05 | 2011-08-11 | Ford Global Technologies, Llc | Child Seat Tethering System |
US20160152164A1 (en) * | 2013-07-16 | 2016-06-02 | BRITAX RÖMER Kindersicherheit GmbH | Child safety seat |
US20170197527A1 (en) * | 2016-01-12 | 2017-07-13 | GM Global Technology Operations LLC | Tether hook bracket with rebound blocker |
US20180297496A1 (en) * | 2017-04-18 | 2018-10-18 | Ford Global Technologies, Llc | Child-seat restraint system |
CA3016034A1 (en) * | 2017-09-19 | 2019-03-19 | Britax Child Safety, Inc. | Quick connect coupler for a child safety seat top tether |
US20220212579A1 (en) * | 2019-04-17 | 2022-07-07 | Proprietect L.P. | Vehicular seat |
US20210070244A1 (en) * | 2019-09-10 | 2021-03-11 | Wonderland Switzerland Ag | Child Safety Seat |
Also Published As
Publication number | Publication date |
---|---|
CN117429328A (en) | 2024-01-23 |
DE102023117762A1 (en) | 2024-01-25 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US6073986A (en) | Easily handled movable vehicle seat assembly | |
US5468045A (en) | Energy absorbing child seat | |
US6767055B1 (en) | Vehicle seat frame and belt assembly | |
US5697670A (en) | Vehicle seat | |
US3885810A (en) | Seat supporting structure for fast moving vehicles | |
US5449216A (en) | Integral child seat and seat frame combination | |
CA2037661A1 (en) | Seat integrated seat belt system | |
US6224132B1 (en) | Easily handled movable vehicle seat assembly | |
US11192475B2 (en) | Rear-facing occupant protection device | |
US4109962A (en) | Anchorage system for a seat belt | |
US11678642B2 (en) | Pet carrier | |
US20240017649A1 (en) | Child seat anchor including energy absorber | |
CA2775789C (en) | Webbing adjuster for a seat belt assembly | |
US11425886B2 (en) | Pet restraint system | |
US10857970B2 (en) | Vehicle restraint system | |
US20230286426A1 (en) | System and method for protecting an occupant in a rear impact of a vehicle | |
US10562420B2 (en) | Vehicle seat including energy absorbing device | |
CN108791176A (en) | Load limitation seat belt retractor | |
EP2038140A2 (en) | Seat | |
US10442393B2 (en) | Pivoting latch plate for seatbelt | |
US20230286425A1 (en) | System and method for protecting an occupant in a rear impact of a vehicle | |
JPH04303032A (en) | Seat frame device | |
US5927818A (en) | Traveling buckle and retractor assembly | |
JP2022157514A (en) | Vehicle seat and manufacturing method for vehicle seat | |
CN117124958A (en) | Automobile seat and spine support restraint device for automobile seat |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: FORD GLOBAL TECHNOLOGIES, LLC, MICHIGAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:JARADI, DEAN M.;FAROOQ, S.M. ISKANDER;FARUQUE, MOHAMMAD OMAR;AND OTHERS;SIGNING DATES FROM 20220617 TO 20220623;REEL/FRAME:060502/0559 |
|
STPP | Information on status: patent application and granting procedure in general |
Free format text: RESPONSE TO NON-FINAL OFFICE ACTION ENTERED AND FORWARDED TO EXAMINER |
|
STPP | Information on status: patent application and granting procedure in general |
Free format text: NOTICE OF ALLOWANCE MAILED -- APPLICATION RECEIVED IN OFFICE OF PUBLICATIONS |